Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical)

v3.19.1
CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - Senior Convertible Notes [Member]
12 Months Ended
Dec. 31, 2018
Debt Instrument, Interest Rate, Stated Percentage 4.00%
Debt Instrument, Term 5 years